chaplin



(No Model.)

WWW

W. GHAPLIN;

LATHE.

2 Sheets-Sheet 1.

Patented Jan. 3 1888.

(No Model.) I 2 Sheets-Sheet 2.

. W. CHAPLIN. V

. LATHE.

No. 375,988. Patented Jan. 3 1888.

UNITED STATES PATENT OFFICE.

WILLIAM GHAPLIN, OF ST. OATHARINES,.ONTARIO, CANADA.

LATHE.

SPECIFICATION forming part of Letters Iatent No. 375,988, dated January3, 1888.

' Application filed July 23,1887.

A the city of St. Oatharines, in the county of Lincoln, in the Provinceof Ontario, Canada, manufacturer, have invented certain new and usefulImprovements in Lathes, of which the following is a specification.

The object of the invention is to devise mechanism by which theshaping-knives for tapering handles and other analogous articles may beadjusted and controlled so as to produce a more perfect finish to thehandle than the shaping-knives now commonly in use after thecutting-knives have turned off the corners of the stick; and itconsists, essentially, in securing the shaping knives on carriers thearms of which pass through slots cut in ahollow drum forming part of thehollow shaft, through which the handle passes into guides cut in sleeveslocated on each side of the drum, the sleeves by means of such guidesbringing the knife-carriers nearer to or farther from the handles, inorder to allow the position'of the knives to be regulated by the shapeon the pattern-wheel, so asto give the handle the requisite taper, thesaid sleeves being connected by the sliding standard and the levers androds connected therewith to the patternwheel. the handle while it isbeing shaped in its course through the hollow shaft, the whole beingoplathe provided with my improvements.

erated substantially as hereinafter more particularly explained.

Figure 1 is a longitudinal section of the Fi 2 is a detail of thecombined shaft and drurh. Fig. 3 is a detail of the sleeves foradjusting the knife-carrier, showing one of the knifecarriers inposit-ion and one removed to exhibit the carrier-guides. Fig. 4 is asection through or y of Fig. 1. Fig. 5 is adetail of the knife-carrierand knife. Fig. 6 is a detail of lever attached to sliding standard.Fig. 7 is a detail of the steadying-pipe.

In the-drawings like letters of reference indicate corresponding partsin .the different figures.

A is the main shaft of the lathe, and B the main driving pulley, keyedon the shaft A. The shaft A is supported at one end by the standard 0and at the other by the sliding A pipe provided with springs steadiesSerial No. 245,065. (No model.)

standard D, which moves longitudinally on the slide E. The shaft A ishollow and has cast with it the hollow drum F, as shown. On each side ofthe drum F, on the shaft A, I place the sleeves G and H, which arerigidly held to gether, but always at the same distance from each other,by the shouldered bolts a. bolts a pass through holes b in the drum F,and are secured by nuts 0 and d to the sleeves G and H.' I

e is a V-shaped annular projection formed on the sleeve H and designedto hold the sleeves G and H securely to the sliding standard D, so thatthey may move together.

I are the shaping-knives,adjustably secured to the carriers J by thebolts f. The carriers J have shoulders g formed on them at each side ofthe knife, from which extend the wings h, which move in the slots 11,cut in the drum F. The shoulders g, fitted against the sides of the sloti in the drum, keep the carriers J, with their knives I, from movinglongitudinally.

k andl are the carrier-arms, formed at an angle to the wings h andextending from opposite sides of the knife-carrier J parallel to eachother, as shown in Fig. 5. The carrierar'rns k and Z of the carrier Jare carried in the guides m and n of the sleeves G and H, and as thesleeves G and H are moved in the direction indicated by single-headedarrow the shaping-knives I move at a tangent farther from the center ofthe hollow shaft, and when in the direction indicated by double-headedarrow the knives I move at a tangent closer to the center of the hollowshaft. (See Figs. 1, 3, and 4.) The shavings created by the action ofthe. knives I are thrown out through the openings 0 in the drum F.

K is a lever pivoted at K and connected at p to the lug L of the slidingstandard D. On the lever K, I pivot at q a trunnion, M, into which isfitted the hollow-headed thumb screw N, threaded for the screw-rod O.

O is a rod which is screwed into the thumbscrew N at one end andflexibly connected at r to the bolt'P, secured in a slot, W, to thebell-crank Q at the other end. By means of this slot W the bolt P may bemade to advance to or recede from the pivots, and the throw of thesliding standard D may be diminished or increased correspondingly. Thebell- The crank Q is pivoted at its lower end at s, and has a roller, 1,pivoted at the end of its upper arm, which roller fits into a groove, a,formed in the cam or pattern wheel R. The cam or pattern wheel R ispivoted eccentrically on the counter-shaft S, and is of such a shape asto correspond with the taper desired to be formed on the handlcthat isto say, the cam or pattern wheel R is, as its name indicates, so pivotedand shaped as to form the pattern for the different tapers of thehandle. As the square stick is fed into the cutting-knives T, thecorners are cutoff, and the stick is turned round when it reaches theshaping-knives. At this point the roller 13 is in a position to startthe taper of the handle, and as the pattcrn wheel It revolves itoperates the said roller t on the bell-crank Q. The bell-crank Q isconnected by the rod 0 to the lever K, as described, and as the roller tfollows the groove a of the patterirwheel R the lever K gives thesliding standard D and the sleeves G and H connected to it areciprocating motion, which brings the shaping-knives I on the carriersJ closer to or farther from the center of the handle to produce atapercorresponding with the pattern of the cam or pattern wheel R, the newhandle to be shaped being brought up to the shaping-knives I when theroller 1!- reaches a certain point in the groovea of the patternwhcelIt.

In order to steady thehandle while passing the shaping-knives andfurther accomplish the object of my invention,I place a thinsteadying-pipe, U, provided with springs 11, projecting through slots urin the pipe U, which is placed in the hollow shaft A at the dischargingend and reaching to the edge of the hollow drum F. The pipe U is held inthe center of the hollow shaft A by the rings X and Y, and is preventedfrom revolvinghvith the hollow shaft A by having its elongated end Zscrewed to the standard 0. (Sec Figs. 1 and 7.)

It will be seen on reference toFigs. 1, 3, and t that the closer thesleeve G is adjusted to the drum F the greater the taper-diameters ofhandle cut bytheshaping-lmives I, and the closer the sleeve II isadjusted to the drum F the smaller the taper-diameters of the handle.The sleeves G and H are connected to the standard D, and are adjusted bythe thumbscrew N on the screwed end of the rod Ofitting into thetrunnion M, pivoted on the lever K. The lever K has a throwcorresponding to the groove a in the pattern-wheel It, whichpattern-wheel may be varied according to the pattern desired, whichthrow may be regulated by the adjustment of the bolt P in the slot \V'.It will be seen from this description that the shaping-knives are heldfirmly to their work and are readily adjustable, so as to give therequired taper and finish to the handle.

What I claim as myinvention is- 1. In a lathe, the main hollow shaft, ahollow drum cast solid with the main hollow shaft and having slots cutin the drum, carriers fitted into said slots, and one or moreshapingknives adj ustably attached to said carriers, combined withsleeves on the main shaft engaged with the carriers and adjustable onthe main shaft to move the cuttingedges of the knives nearer to orfarther from the center of the main shaft, substantially as and for thepurpose specified.

2. The main hollow shaft A, the drum F thereon and having slots 6, thecarriers J, having wings h and arms is and l, and the shapingknivessecured on said carriers, in combination with the sleeves G and H,adapted to be adjusted longitudinally on the main shaft, and havingguides at and a formed therein for the reception of the carrier-arms 7cand Z, respectively, substantially as and for the purpose specified.

3. The main hollow shaft A, the drum F thereon and formed with slots 2,the carrier J, having wings h and shoulders g, andlhc shaping-knife I,adjustably secured on said carrier by the boltf, in combination with theadjustable sleeves Grand H, held rigidly together by the shoulderedbolts (6 and to the sliding standard D by theV-shaped ring 0, formed onthe sleeve H, and having guides for the carrierarms k and Z, and saidcarrier-arms, substantially as described, and for the purpose specified.

4:. The standard 0, the sliding standard D, the hollow shaft A supportedby said standards, and the drum F, cast solid with said shaft andadapted to carry the shaping-knives, in combination with the shapingknives, and the sleeves G and H, held together by the shouldered bolts aand to the sliding standard D by the V-shaped ring 0, formed on thesleeve H, substantially as and for the purpose specified.

5. The shaping-knives, sliding standard, sleeves G- and H, cam orpattern wheel R, counter-shaft S, rod 0, bell-crank Q, and the drum F,adapted to carry the shaping'knives I and situated between the sleeves Gand H, held to the sliding standard D by the annular projection 6,formed at one end of the sleeve H, in combination with the lever K,pivoted at K and adj ustably connected to the cam or pattern wheel R bythe rod 0, and bcll'crank Q, having the roller 25, adapted to revolve inthe groove to by the motion of the eccentric pattern-wheel R on thecounter-shaft S, substantially as and for the purpose specified.

6. The sliding standard D, bell-crank Q, pattern-wheel It, having groovea, trunnion M, thumb-screw N, and lever K, pivoted at K and having itsupper end connected to the sliding standard D at p, in combination withthe rod 0, actuated by the bell-crank Q, the free end of which isadapted to move in the groove u in the pattern-wheel R, and having itsthreaded end titted into the thumb-screw N, which thumb-screw is screwedinto the trunnion M, pivoted at g on the lever K, sub stautially as andfor the purpose specified.

7. The counter-shaft S, bell-crank Q, having-pipe U, fitted into thedischarging end of ing slot W, lever K, bolt P, sliding standard theshaft A and rigidly secured to the stand- D, and the rod 0, at one'endadjustably conard 0, having slot w formed in said pipe, in r 5 nected tothe pivoted lever K, which actuates combination with the springvandrings X and 5 the sliding standard D, and pivoted at r to the Y,substantially as and for the purpose specibolt ]?,which is adj ustablyheld in the slot W, fied. I formed in the bell-crank Q, having roller15,- St. Oatharines, July 13, 1887.

pivoted at its free end in combination withthe pattern-wheel R, drivenby counter-shaft OHAPLIN' 10 S, and having groove 24 formed therein,sub- In presence ofstantially as described and specified. J. D. GHAPLIN,

8. The shaft A, standard 0, and the steady- J NO. 0. NOTMAN.

